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#!/usr/bin/perl
# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# $Source: src/usr/hdat/genHdatBin.pl $
#
# OpenPOWER HostBoot Project
#
# Contributors Listed Below - COPYRIGHT 2017,2018
# [+] International Business Machines Corp.
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
#
# IBM_PROLOG_END_TAG
use strict;
use warnings;
use XML::LibXML;
use feature 'say';
use Class::Struct;
use File::stat;
use File::Copy;
my $cfgBigEndian = 1;
################################################################################
# Pack 2 byte value into a buffer using configured endianness
################################################################################
sub pack4byte {
my($value) = @_;
my $binaryData;
if($cfgBigEndian)
{
$binaryData = pack("N",$value);
}
else # Little endian
{
$binaryData = pack("V",$value);
}
return $binaryData;
}
my $layoutFile = 'hdatBinLayout.xml';
my $dom = XML::LibXML->load_xml(location => $layoutFile);
# verify if collective bins size if less than max size
validateMaxSize($dom);
my %toc = createToc($dom);
my $chkSum = createChecksum($dom);
my $ver = '104q';
my $hdatBin = "hdat.bin";
open ( my $hdatBinfh , '>', $hdatBin)
or die "Can't open > $hdatBin: $!";
binmode($hdatBinfh);
print $hdatBinfh $ver;
print $hdatBinfh $chkSum;
foreach my $my_key ( sort keys %toc )
{
print $hdatBinfh $my_key;
print $hdatBinfh $toc{$my_key};
}
seek($hdatBinfh,0x1014,0);
my $tmpFile = "./tempFile";
open my $totbinfh , '<', $tmpFile;
binmode($totbinfh);
local $/;
my $buffer = <$totbinfh>;
print $hdatBinfh $buffer;
close $totbinfh;
close $hdatBinfh;
sub validateMaxSize
{
my $dom = shift;
my $totSize = 0;
my $headerSize = 0x1014; #tocsize + checksum size + version size
foreach my $binFile ( $dom->findnodes('/hdat/section'))
{
if (-e $binFile->findvalue('./fileName'))
{
say $binFile->findvalue('./fileName');
$totSize += (stat($binFile->findvalue('./fileName')))->size;
}
else
{
say $binFile->findvalue('./fileName'), "doesnt exist";
}
}
my $maxsize = hex($dom->findvalue('/hdat/metadata/maxSize'));
say $maxsize;
if($maxsize < ($totSize + $headerSize))
{
#say $dom->findvalue('/hdat/metaData/maxSize');
#say ($totSize + $headerSize);
die " collective size of binaries is more than max size , $totSize";
}
}
sub createToc
{
my $dom = shift;
my %toc = ();
my $offset = 0x1014;
foreach my $binFile ( $dom->findnodes('/hdat/section')){
if (-e $binFile->findvalue('./fileName'))
{
$toc{pack4byte($offset)} = pack4byte((stat($binFile->findvalue('./fileName')))->size);
$offset += ((stat($binFile->findvalue('./fileName')))->size);
}
else
{
$toc{pack4byte($offset)} = pack4byte(0);
$offset += 4; #its a hash, so bump up by 4 bytes for uniqueness
}
}
return %toc;
}
sub createChecksum
{
my $dom = shift;
my $tmpFile = "./tempFile";
open my $totbinfh , '>', $tmpFile;
binmode($totbinfh);
foreach my $section ( $dom->findnodes('/hdat/section')){
if (-e $section->findvalue('./fileName'))
{
local $/;
open my $sectBinfh, '<', $section->findvalue('./fileName');
binmode($sectBinfh);
my $data = <$sectBinfh>;
print $totbinfh $data;
close $sectBinfh;
say $section->findvalue('./fileName');
}
else
{
print $totbinfh pack4byte(0); # if the file doesn't exist,fill 4 byte 0's.
say $section->findvalue('./fileName'), "is empty";
}
}
my @md5= split / /, `md5sum ./tempFile`;
close $tmpFile;
say 'checksum is'.$md5[0];
return $md5[0];
}
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